// https://leetcode-cn.com/problems/insert-into-a-binary-search-tree/
// 701. 二叉搜索树中的插入操作

#include <iostream>
#include <vector>
#include <string>
#include <unordered_set>
#include <map>
#include <unordered_map>
#include <algorithm>
#include <queue>
#include <limits.h>

using namespace std;

// struct ListNode {
//     int val;
//     ListNode *next;
//     ListNode() : val(0), next(nullptr) {}
//     ListNode(int x) : val(x), next(nullptr) {}
//     ListNode(int x, ListNode *next) : val(x), next(next) {}
// };

struct TreeNode {
    int val;
    TreeNode *left;
    TreeNode *right;
    TreeNode() : val(0), left(nullptr), right(nullptr) {}
    TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}
    TreeNode(int x, TreeNode *left, TreeNode *right) : val(x), left(left), right(right) {}
};




class Solution {
public:
    TreeNode* insertIntoBST(TreeNode* root, int val) {
        if (root == nullptr) {
            TreeNode *node = new TreeNode(val);
            return node;
        }
        
        if (root->val > val)
            root->left = insertIntoBST(root->left, val);
        if (root->val < val)
            root->right = insertIntoBST(root->right, val);
        
        return root;
    }
};




int main() {
    Solution obj = Solution();
}